Rotary pump.



No. 792,665. PATENTED JUNE 20, 1905. W. PATTERSON.

ROTARY PUMP.

APPLIOATION FILED SEPT. z2, 1904.

2 SHEETS-SHEET 1.

Witnesses M'ZZlZlNLaZ/:Solwsmss W y b9, /A /Ai l ttomeg No. 792,665. PATENTED JUNE 20, 1905.

W. PATTERSON. ROTARY PUMP.

AYPLIGATION FILED SEPT. 22, 1904.

2 anims-SHEET 2.

No. "reacios,

UNITED STATES Patented June 190:5.

PATENT OFFICE.

WILLIAM PATTERSONOF CENTRAL CITY, NEBRASKA.

ROTARY PU NIP.

SPECIFICATION forming' part of Letters Patent No. 792,665, dated June 20, 1905.

Application iiled September 22, 1904. Serial No. 225.491.

T0 all whom, it may concern.'

Be it known that I, WILLIAM PATTERSON, a

`citizen of the United States, residing at Central City, in the county of Merrick and State of Nebraska, have invented a new and useful Rotary Pump, of which the following is a speciication.

This invention relates to rotary pumps, and y may be used for the pumping of water, air, or

other fluid.

The principal object of Vthe invention is toy provide a novel form of rotary pump that will discharge a continuous stream of water,

portions of the volumes of water received by the intakes being delivered to chambers formed in a revoluble piston and the water` ,will be subjected to but little frictional wear.

With these and other objects in view, as will more fully hereinafter appear, the inlventionconsists in certain novel features of .construction and arrangement of parts, hereinafter fully described,illustrated in the accompanying drawings, and particularly pointed` out in the appended claims, it being under`` stood that various changes in the form, proportions, size, and minor details of the struc- .ture may be made without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, Figure l is a sectional elevation of a rotary pump constructed in accordance with the invention. Fig. 2 is a plan view of the lower half of the cylinder, the piston being removed. Fig. 3 is a transverse sectional elevation of the pump on the line 3 3 of Fig. 1. Fig. 4 is a detail perspective view of a portion of the pump.

Similar numerals of reference are employed to indicate corresponding parts throughout the several figures of the drawings.

The pump is provided with a bed or baseplate 10, to which is secured a cylinder 11. the latter being preferably formed in two sections and provided with bolting-iianges 12 for convenience in assembling the parts and to permit any necessary examination or repairs.

In the opposite sides of the casing are formed bearings for the reception of a transverselydisposed shaft 14, one end of the shaft extending out through a suitable stuiiing-box in one of the cylinder-heads and being connected to any suitable actuating device. At the bottom of the cylinder is an intake-port 15, closed by an u pwardly-opening valve 16, and at the top of the casing is a discharge-port17, connected to 'the pipe or tube through which the fluid is conveyed to the point of discharge.

On the shaft 14 is mounted a revoluble piston-body 18, the .latter in the present instance being formed of a central hub member 19 and a pair of annular disks 20, the disks being connected by a plurality of radial partitions 21 and auxiliary partitions 22, the latter being of less radial extent than said partitions 21.

Near the peripheriesof the disks and at points in radial alinement with the auxiliary partitions are transversely-disposed pivotpins 24, on which are mounted the piston-wings 25, the inner surface of each piston-wing bearing against a transversely-extending cushion 26, formed of rubber or other suitable yieldable material, that will prevent leakage between the chambers formed on either side of the auxiliary partitions Q2.

Each of the piston-wings is of the contour best shown in Fig. 4, the head of each wing being wider than the tail and the head being further so arranged that its wider surface is on a line approximately radial with reference to the center of the shaft 14. The thickness of the head portion of each of the wings is about equal to the distance between the peripheries of the disks and the inner curved surface of the lower portion of the cylinder, so that any water or other iiuid which may be received at the intake will be forcibly moved through the curved passage-way or pumpingspace through which the piston-wing travels after passing the intake-port. The tail of each of the wings is gradually reduced in thickness as well as in width, and the extreme end of each of the tails rests in a small socket 28, that is formed in the outer end of the partition 21. The curvature'of the outer face of the piston from the plane of the pivot to the head is on a line corresponding to the curvature of the periphery of the disk, while the outer surface of that portion of each wing from the plane of the pivot to the tail is on a straight line that at times is tangential with reference to the peripheral lines of the disks. The contour in plan of the wings and the recesses within which said wings are received are so related that the wing will iit snugly within the recess, while the extent of inward movement of said wings is limited, the head coming into contact with a rib 30, formed on each main partition 21, while the tail portion of each wing comes into contact with the bottom of the recess 28.

In the upper portion of the cylinder at a point beyond the dischargeport 17 is a curved wing-actuating cam 31, that may be formed of metal or other material. This cam is arranged on a line substantially subtangent to the periphery of the disks, and its central portion is cut away, forming an elongated recess 33 of a Width less than the width of the tail portion of the wings. The recess terminates at a shoulder 34 near the lower end of the cam. and during the travel of the wings the tail portions will come into contact with said shoulders and be moved inward in the direction of the axis of the piston, this occurring v at about the time the heads of the wings move into a position adjacent to the intake-port.

For convenience in repairing a portion of the inner wall of the cylinder is for-med of a removable seg-mental strip 40 at the point where the most rictional wear occurs, and when necessary this strip may be renewed. In operating the device, water will low through the port 15 to the interior oi' the cylinder, and, as the piston rotates, the broader ends of the piston-wings will force successive volumes of water around in the direction of rthe discharge-opening 17. Duringthis operation the compartments between the par-titions willbecome filled with water'and the wings will be held outward, as shown in the upper portion of F ig. 1, until the broader ends of the wings come into contact with the spaced curved arms of the cam 31, whereupon the broader ends of the wings will be gradually forced inward, as shown to the Vright of Fig. l. By the time the broader end ot' each successive wing has reached the lower end of the cam 3-1 it will be wholly within the lines of the piston, and then as the movement continues the narrower tail of the wing will ride within the recess 33 of the cam until such tail portion engages against the shoulder 34, whereupon the tail will be depressed and the head a piston-wing pivotally mounted at a point of the wing will be thrown outward in a position to engage the volume of water entering at the intake-port. This outward movement of the broader end of the wing will, furthermore, create a slight vacuum or suction force in the cylinder at a point above the inlet-port, so that the'liap-valve may rise and allow the water to iow into the cylinder.

Having thus described the invention, what is claimed is- 1. The combination in a rotary pump, of a cylinder, a revoluble piston mounted therein and provided with a plurality of radiating partitions forming chambers or pockets, piston-wings pivotally mounted at the outer ends of alternate partitions, and means for alternately engaging and moving the opposite ends of said wings.

2. The combination in a rotary pump, of a cylinder, a revolubley piston mounted therein, a piston-wing pivoted at a point intermediate of its length to said wing, the vopposite ends of said wing being respectively of different width, and a cam for engaging rstthe wider ends, and then the narrower ends of said wings and moving the same in the direction of the axis of the piston.

3. The combination ina rotary pump, of a cylinder, -a revoluble piston disposed therein,

intermediate of its length, the yopposite ends of said wing being respectively of different width, and a recessed cam of which the side portions engage with the head of the wing, the width of the recess being greater than the width of the tail of said piston-wing.

4. The combination in a rotary pum-p, of a revoluble piston disposed therein, a pistonwing mounted at a point intermediate of its length, a recessed cam for engaging the head 100 of the wing, and a shoulder formed on said cam and serving to engage the head of the wing.

5. The combination in a rotary pump, of a cylinder, a revoluble piston disposed therein ,105 and provided with radial partitions, auxiliary partitions disposed between said radial partitions, and oi" less length than the latter, pivotpins in radial alinement with the auxiliary partitions, piston-wings on said pins, and elas- I I0 tic cushions disposed between the ends of the auxiliary partitions and the inner surface of the wings.

In testimony that I claim the foregoing as my own I havel hereto affixed my signature in I 15 the presence of two witnesses.

WILLIAM PATTERSON.

Witnesses:

GEORGE A. AeNEw, J. W. VIER-EGG. 

